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/*========================== begin_copyright_notice ============================
Copyright (C) 2017-2021 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#ifndef __GEN_UPDATE_CB__
#define __GEN_UPDATE_CB__
#include "Compiler/CodeGenPublic.h"
#include "common/LLVMWarningsPush.hpp"
#include <llvm/IR/Function.h>
#include <llvm/IR/Instructions.h>
#include <llvm/IR/Intrinsics.h>
#include <llvm/IR/InstIterator.h>
#include <llvm/ADT/SetVector.h>
#include <llvm/Transforms/Utils/Local.h>
#include <llvm/Transforms/Utils/BasicBlockUtils.h>
#include <llvm/Transforms/Utils/ValueMapper.h>
#include "common/LLVMWarningsPop.hpp"
void initializeGenUpdateCBPass(llvm::PassRegistry &);
namespace IGC {
class GenUpdateCB : public llvm::FunctionPass {
public:
static char ID;
GenUpdateCB() : llvm::FunctionPass(ID) { initializeGenUpdateCBPass(*llvm::PassRegistry::getPassRegistry()); }
virtual llvm::StringRef getPassName() const { return "GenUpdateCB"; }
virtual bool runOnFunction(llvm::Function &F);
virtual void getAnalysisUsage(llvm::AnalysisUsage &AU) const {
AU.setPreservesCFG();
AU.addRequired<CodeGenContextWrapper>();
AU.addRequired<llvm::DominatorTreeWrapperPass>();
}
private:
bool isConstantBufferLoad(llvm::LoadInst *inst, unsigned &bufId);
bool allSrcConstantOrImm(llvm::Instruction *inst);
bool updateCbAllowedInst(llvm::Instruction *inst);
void InsertInstTree(llvm::Instruction *inst, llvm::Instruction *pos);
llvm::Instruction *CreateModule(llvm::Module *newModule);
const unsigned FLAG_LOAD = 1;
const unsigned FLAG_RESINFO = 2;
CodeGenContext *m_ctx = nullptr;
// For each instruction in m_CbUpadteMap, we record whether it's
// coming from a load or resinfo.
llvm::DenseMap<llvm::Value *, unsigned> m_CbUpdateMap;
llvm::ValueToValueMapTy vmap;
llvm::Module *m_ConstantBufferReplaceShaderPatterns = nullptr;
uint m_ConstantBufferReplaceShaderPatternsSize = 0;
uint m_ConstantBufferUsageMask = 0;
uint m_maxCBcases = 128;
};
} // namespace IGC
#endif
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